package/x11r7/xdriver_xf86-video-amdgpu: fix glamor support

Add configure options for glamor support following the logic of the
xserver_xorg-server package:
https://git.busybox.net/buildroot/tree/package/x11r7/xserver_xorg-server/xserver_xorg-server.mk#n141

Fixes:
http://autobuild.buildroot.net/results/e78/e786118db87f65bdcb913656a7b6d9b3187a212c/
http://autobuild.buildroot.net/results/a00/a0089ed3abdb0a3712524ae77fc613a4982054ed/
http://autobuild.buildroot.net/results/541/54193d198efe371bdb19ac4981d631ff1e279717/
http://autobuild.buildroot.net/results/298/298198c036931b10f7e1046176bd48310ae7455f/
http://autobuild.buildroot.net/results/4da/4da87d30e6f5a10aafae60abce1b89ed92204a4e/
http://autobuild.buildroot.net/results/74c/74ceb71bd48ea3a2bf6ff68aec0af76a11662f1f/
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/x11r7/xdriver_xf86-video-amdgpu/xdriver_xf86-video-amdgpu.mk

@@ -15,6 +15,12 @@ XDRIVER_XF86_VIDEO_AMDGPU_DEPENDENCIES = \
 	xorgproto \
 	xserver_xorg-server
 
+ifeq ($(BR2_PACKAGE_HAS_LIBEGL)$(BR2_PACKAGE_HAS_LIBGL)$(BR2_PACKAGE_LIBEPOXY),yyy)
+XDRIVER_XF86_VIDEO_AMDGPU_CONF_OPTS += --enable-glamor
+else
+XDRIVER_XF86_VIDEO_AMDGPU_CONF_OPTS += --disable-glamor
+endif
+
 # xdriver_xf86-video-amdgpu requires O_CLOEXEC
 XDRIVER_XF86_VIDEO_AMDGPU_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -D_GNU_SOURCE"